GB2256565B - Digital demodulator - Google Patents

Digital demodulator

Info

Publication number
GB2256565B
GB2256565B GB9208460A GB9208460A GB2256565B GB 2256565 B GB2256565 B GB 2256565B GB 9208460 A GB9208460 A GB 9208460A GB 9208460 A GB9208460 A GB 9208460A GB 2256565 B GB2256565 B GB 2256565B
Authority
GB
United Kingdom
Prior art keywords
digital demodulator
demodulator
digital
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB9208460A
Other versions
GB9208460D0 (en
GB2256565A (en
Inventor
Jack Marcus Keen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAE Systems Electronics Ltd
Original Assignee
GEC Marconi Ltd
Marconi Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB919111986A external-priority patent/GB9111986D0/en
Application filed by GEC Marconi Ltd, Marconi Co Ltd filed Critical GEC Marconi Ltd
Priority to GB9208460A priority Critical patent/GB2256565B/en
Priority to CA 2069578 priority patent/CA2069578A1/en
Publication of GB9208460D0 publication Critical patent/GB9208460D0/en
Priority to FR9206792A priority patent/FR2677509A1/en
Publication of GB2256565A publication Critical patent/GB2256565A/en
Application granted granted Critical
Publication of GB2256565B publication Critical patent/GB2256565B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
GB9208460A 1991-06-04 1992-04-16 Digital demodulator Expired - Fee Related GB2256565B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB9208460A GB2256565B (en) 1991-06-04 1992-04-16 Digital demodulator
CA 2069578 CA2069578A1 (en) 1991-06-04 1992-05-26 Digital demodulator
FR9206792A FR2677509A1 (en) 1991-06-04 1992-06-04 DIGITAL DEMODULATOR.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919111986A GB9111986D0 (en) 1991-06-04 1991-06-04 Digital demodulator
GB9208460A GB2256565B (en) 1991-06-04 1992-04-16 Digital demodulator

Publications (3)

Publication Number Publication Date
GB9208460D0 GB9208460D0 (en) 1992-06-03
GB2256565A GB2256565A (en) 1992-12-09
GB2256565B true GB2256565B (en) 1995-03-08

Family

ID=26299003

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9208460A Expired - Fee Related GB2256565B (en) 1991-06-04 1992-04-16 Digital demodulator

Country Status (3)

Country Link
CA (1) CA2069578A1 (en)
FR (1) FR2677509A1 (en)
GB (1) GB2256565B (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2113930B (en) * 1982-01-26 1985-03-13 Plessey Co Plc Frequency discriminator
US4689806A (en) * 1983-11-07 1987-08-25 Hughes Aircraft Company Receiver mode control for acquiring and tracking a signal
US4750214A (en) * 1986-06-11 1988-06-07 Rockwell International Corporation Digital FM demodulator using delayed signal product with arctangent
JPH01296704A (en) * 1988-05-24 1989-11-30 Matsushita Electric Ind Co Ltd Fm demodulator

Also Published As

Publication number Publication date
FR2677509A1 (en) 1992-12-11
GB9208460D0 (en) 1992-06-03
CA2069578A1 (en) 1992-12-05
GB2256565A (en) 1992-12-09

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990416